External Convective Thermal Resistances Test Facility

This facility of the Applied Thermodynamics and Heat Transfer group is able to determine external convective thermal resistances for air/water heat exchangers based on the Wilson plot technique. The facility consists of a wind tunnel and a hot water circuit. Different fans can be coupled to the wind tunnel to achieve a wide range in air mass flow rates. With the water circuit a waterside mass flow rate between 200 and 750 kg/hr and a water temperature between 30°C and 80°C can be reached. In this way, the external convective resistances can be determined for airside mass flow rates varying between 0.5 and 7 m/s.